42115402 has 24 divisors (see below), whose sum is σ = 73775556. Its totient is φ = 17978688.

The previous prime is 42115399. The next prime is 42115417. The reversal of 42115402 is 20451124.

It can be written as a sum of positive squares in 2 ways, for example, as 42107121 + 8281 = 6489^2 + 91^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42115402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29988 + ... + 31360.

Almost surely, 2^42115402 is an apocalyptic number.

42115402 is a deficient number, since it is larger than the sum of its proper divisors (31660154).

42115402 is a wasteful number, since it uses less digits than its factorization.

42115402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702 (or 1695 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 42115402 is about 6489.6380484585. The cubic root of 42115402 is about 347.9207387637.

Adding to 42115402 its reverse (20451124), we get a palindrome (62566526).

The spelling of 42115402 in words is "forty-two million, one hundred fifteen thousand, four hundred two".